Interesting, but is there some basic instructions? Yes, there will be instruction as an option on the Main Menu.
The rules are:
1 - Try to destroy all the pieces;
2- When you click on a number all of the pieces at it's value distance will be activated.
3- When you click on a chess piece, all of the possible movements will activate the pieces on the board.
4 - When you destroy the same piece multiple times, you get a combo, destroy pieces in a sequence like 2,3,1 or Horse, Bishop and Tower, and u get a bonus for sequences.

KnightR springs to mind for some reason (the R is for Remove...)
Nice name, we will consider that.Are we trying to capture all the pieces? Remove all squares?
Yes! That's the objective of the game.

I'm loving the game but do hope you'll include in documentation the legal sequences since, as I'm not a chess player (I just know how the pieces move), I have NO IDEA what are legitimate chess sequences.

I figured the best bet for name ideas is looking through a Chess Terms Glossary and looking for seemingly relevant terms to what this game appears to be about. Here are a few potential ideas (the term and their definition):

Blockading Square:
The square directly in front of an isolated or backward pawn. This square can also serve as an outpost square, as an occupying piece cannot be chased away by pawns.

Impossible Move:
A move which has obvious unfavourable results, and so is to be avoided.

Knight on the Rim:
A knight on the edge of the board. Unless it is performing a specific duty, its future is said to be "dim," as it attacks very few squares, none in the centre. It may even become trapped on the edge.

Prophylaxis:
A strategy explored by Nimzovich, where you prevent your opponent from taking action in a certain area for fear of reprisal. Overprotection is a form of prophylaxis.

Zugzwang:
German "forced to move". A position where a player would prefer to pass his move (but of course cannot, as it is illegal) as any move damages his game.

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